Food jug and lock therefor



Nov. 14, 1933. E. s. JOHNSON FOOD JUG AND LOCK THEREFOR Filed May 28, 1931 FIG. 2

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will appear from Patented Nov. 14, 1 933 PATENT OFFICE 7 1,935,470 FOOD JUG AND LOCK THEREFOR Ernest S. Johnson, East St. Louis, 111.; Elizabeth Johnson, executrix of said Ernest S. Johnson, deceased, assignorv to Knapp-'Monarch Company, a corporation of Missouri Application May 28, 1931. a Serial No. 540,611

, 4 Claims. (01. 215-87) The present invention relatesto portable containers, and more particularly to a type of container adapted for the convenient carrying of foodstufis.

Heretofore, portable containers such as the well known therma jug have been used for'the carrying of liquids, either hot or cold. Such containers or jugs are not adaptable for carrying foodstufis for several reasons, an important reason being the extreme difiiculty in both filling and emptying the carryingvessels.

Therefore, it is one object of my invention to providea container or jug especially adapted for the transportation of foods, either hot or cold,

in other than liquid form, wherein the inner vessel, constructed of si liceous or similar material;

hasv a relatively wide mouth or opening.

v It is afurther object of my invention to provide, a container of the above indicated character having an efliciently insulated cover.

It is a still further object of my invention to provide a container of the above indicated character wherein the cover is insulated from the carrying vessel and also from the outer casing.

It is a still further object of my invention to provide anew andimproved lock for holding acover in place.

,Itis .a still further object of my invention to provide a lock that cooperates with the carrying handleand the cover. -It isai still further object of'my invention to provide 'a'cammoun'ted upon the carrying handle and movable to engage the cover to hold the same in place.

fAnother and furtherobject of my invention is to provide a lock of the above indicated charactercombining the principles of a cam and a toggle.

Another and further-object of ,my invention is to provide a cam lock for the cover, so arranged that a greater span of the cam will have to be passed when unlocking the cover.

Anotherand further object of myinvention is to provide a container and cover with'a cam lock therefor, that willbe effective in any position of the cover; i Another and furtherobject of my invention is to provide a cam lockwith a stop for itslocked position.

A still further object of-my invention is to provide a locking. cam with a finger piece whereby the same may be moved to its unlocked position. 7

. Other and further objects of my invention the following specification that is integral with ,the collar 4, an

cement beingused. to close the. joint between the taken in conjunction with the accompanying drawing, whereinr Figure '1 is an elevational view of my improved jug, with parts broken away and parts shown in section;

Fig. 2 is a partial front elevational view of my improved jug, showing especially the locking arrangement;

The illustrated improved jug or food carrying container comprises a metal outer'casing consisting of a bottom 1, of pan-like formation, a cylinf drical body portion 2, which is surmounted by a top or cap 3 of somewhat similar contour to the bottom 1, except for the addition of a-collar 4 in. which is the opening allowing access to the 1,0 interior of the container. The top 3 and collar 4 are integral, but the top 3 andthe bottom 1 are seamed or otherwise secured to the body portion 2. q

Supported on the interior of the outer casing, and spaced therefrom, is a food carrying vessel 7, which may be formed of any siliceous composition or other material now well lmown as suitable for the transportation and holding of foodstufis, etc.

It will be noted that the vessel 1 is comparatively wideand ofthe same diameter from top and bottom. This construction is chosen especially for the reason that the herein described jug or container is intended for use in the convenient transportation of foods, usually cooked foods, on outings, automobile and boat trips, etc., in much the same manner as a large part of the general pubthe interior of the vessel with which the goods come in contact. Containers or bottleshaving constricted necks or openings, heretofore used'lOO for liquids, do not meet the named requirements.

The wide mouthedjar orvessel 7 provided in my I improved container is especially suited forthe service intended.

The upper edgeof the vessel '7 is 'provid ed with an outwardly projecting annular'lip 8 which fits under the inwardly projecting annular flange 9 appropriate clip 8 and flange 9 A substantial space exists between the outer wall of the vessel '1 and the inner wall of the outer casing, as indicated at 11, and this space is preferably filled with suitable insulating material, such as ground cork, kapok, and the like.

The vessel '1, and also the outer casing, is closed by a cover 12 whichis shown formed of two pieces of sheet metal 13 and 14. The outer or upper piece 13 is arched, as shown, extending upwardly from an annular rim 15. The bottom member 14 comprises a depressed portion 14 of slightly less diameter than the vessel '7, and which fits down into the interior of the vessel as indicated in Fig. 1. It will be noted that the side wall of the depressed part 1 1 is spaced from the inner Wall of the vessel 7, so that there is no direct contact therebetween and therefore no heat transfer therebetween.

The edge of the rim 15 is turned inwardly as indicated at 15' so as to extend around the edge of the outwardly extending annular flange 16 which is a part of the bottom member 14 of the cover. The space between the top and bottom members 13 and 14 of the cover is divided into two dead air spaces by the insertion of the sheet of heat insulating material 16 between the two pieces of the cover as shown in Fig. 1. A gasket 10 may also be provided between the portion 15' and the under surface of the flange 16 so as to prevent metal to metal contact at that point. The flange 16 and rim 15 with the sheet 10 and gasket 10' are'then clamped or pressed together. This construction retards the heat leakage from the interior of the vessel through thecover to the atmosphere; and provides a completely insulated container. 7

When the cover is put in place upon the container, the rim 15 will overlie the rim 9 of the colcover from contact with the this point. For this purpose, a rubber ring shaped gasket 1'7'is'fitted around the depressed part 14 of the cover 1 1 and extends outwardly therefrom beyond the rims 15 and 9. The rubber gasket 17 overlies both the inner and outer edges of the rim {9, thus preventing any possible contact between the two rims. When the cover is pressed in place; as will be hereinafter described, the rubber gasket is compressed and an air tight seal is efiected. In addition, the'gasket insulates the vessel '7 and with the outer casing.

Another importantfeature of my invention is the method of locking the cover 12 in place so as to effect the air tight seal referred to. In producing this locking, advantage is taken of the resiliency of the carrying handle or bail 21, which is mounted on the container. As shown in Fig. 2, the'handle 21 is pivoted in the collar portion l of the outer casing so as to swing across the vertical center of the vessel '1 at least a sufiicient distance to be outof the way for filling and emptying the vessel.

The handle 21 has a straight central portion 22 on which is mounted a tube 23. Two parts of a 3 hand grip are mounted at either end of said tube 23 as indicated at 24 and 25 respectively, and the tube is flared outwardly'at its edgesso as to retain the hand grip parts in place.

shaped cam 26 (Fig. 1) which is'znounted so as to turn freely with the tube 23, Or" course, the

cam 26 may be loosely mounted on thetube23.

Itwill' be noted from Fig. 1 that the pivotal mounting point of the cam 26 is well above the horizontal center line of the ellipse and is interseoted by the vertical center line of the ellipse, the ellipse being of greatest span along this line between its poles. The upper end of the'ellipse 26 is tapered and reduced slightly so as to C01]? form with the contour of the hand grip 24, 25.

The bottom of the cam- 26 is curved, as indicated at 28, and this curved part fits into a depression 29 in the center of the top member of the cover. The depression is the shape or" a segment of a sphere which is of substantially the same radius as the portion 28 of the cam 26. The distance between the bottom of the depression 29 to the bottom of the portion 22 of the bail is less than the span of the cam 26 from its pivot 26' to the bottom of the portion 28. Hence, when the cam is in locking position (Fig. 1) a definite pressure is exerted on the cover which presses it in place and locks the parts in position.

The cam 26 has projecting from one side thereof a finger piece 31 on the bottom of which is a lug '32 which engages the top of the cover when the cam is in locked position (Fig. 1) thus constituting a stop for the-operation of the lock.

The locking and unlocking operation is as follows:

The cover is put'in place on the container, the bail or handle 21 is brought approximately over the center of the cover, and the cam 26 is inserted into the depression 29 with the bail 21 in vertical position, and is pressed into locking position by means of finger piece 31, until the stop 32 engages the cover. From Fig. 1, it will be seen that in locked position the pivot 26 of the cam has been carried slightly past the vertical center line of the container indicated at 33. In this position there is sufficient pressure upon the cover to eifect the air tight seal desired at the gasket 1'7, but the low point of the camportion 28, or the point of maximum pressure, has been passed in putting the cam in looking position, and this point must be passed again in order to unlock the cover. This arrangementeliminates accidental opening or unlocking of the cover. It also will be understood. that this latter arrangement is optional. v j

To unlock the cover, the cam is turned in the reverse direction by meansof lifting'the finger piece until the pressure is relieved and the cam may be removed from the depression 29.

By means of the arrangement of the parts and the shape of cam and cooperating depression, there is a continually increasing pressure exerted by the cam while being pressed into'lockingposition. Also by using a depression the shape of a tended to be covered by the appended claims. Also mounted upon the tube 23 is a flat elliptical I claim;

1. In a device of the class described; a container, a cover therefor, a handle connected with said container and extending above said cover,- a dividedhand grip rotatable on said handle and a cam between the divisions of said hand grip and pivotally mounted relative to said handle and relative to said hand grip, said cam being adapted to engage said cover to retain it in position on said container.

2. In a device of the class described, a container, a cover therefor, a handle connected with said container and extending above said cover, a tube on said handle, a divided hand grip and a cam on said tube, said cam being positioned between the divisions of said divided hand grip and being adapted to engage saidcover to retain it. in position on said container.

3. In a device of the class described, a container, a cover therefor, a handle connected with said container and extendingabove said cover, a tube on said handle, a divided hand grip and a cam on said tube, said cam being adapted to engage said cover to retain it in position on said container, the ends of said tube being flared to retain said hand grip and said cam thereon.

4. In a device of the class described, a container, a cover therefor, a handle pivotally connected to the container and adapted to swing relative thereto to a position above said cover, a cam member pivotally mounted on said handle and a divided hand grip rotatable on said handle and positioned on each side of said cam member, said divided hand grip and said cam member being capable of pivotal movement independent of each other, said cam member being adapted to engage said cover to retain it in position on said con-.

tainer.

ERNEST S. JOHNSON. 

